Warp beaming machine



March 25, 1941. w. v. BOYD WARPBEAMING MACHINE 2 Sheets-Shet 1 FiledApril 6, 1939 INVENTOR WY B OYD B .gzw

TTORNEY March 25, 1941. w v BOYD WARP BEAMING MACHINE Filed April 6,1939 2 Sheets-Sheet 2 R a; T1 R uwwm mmflm WW2 w FIG? Patented Mar. 25,1941 UNITED STATES 2,236,485 WARP BEAMING MACHINE William V. Boyd,Cornwall, Ontario, Canada, as-

signor to CanadianCottons Limited, Montreal,

Quebec, Canada Application April 6, 1939, Serial No. 266,431

3 Claims.

This invention relates to improvements in warp beaming machines and hasfor its object to reduce the labor costs incident to operation oi suchmachines.

The conventional warp beaming machine requires the constant attention ofan operator who must watch the warp closely and be prepared to stop themachine Whenever necessary to remove leases or to remedy imperfectionsin the warp such as broken ends or snarls which, if permitted to passunnoticed, give rise to various difiiculties and delays which materiallyincrease the cost of operation.

The present invention provides a warp beaming machine equipped withautomatic controls for stopping the machine whenever a lease, broken endor snarl reaches a predetermined point in the travel of the warp fromthe tensioning rolls to the beam. This eliminates the necessity Q ofkeeping a constant watch on the-warp and. enables a single operator totake care of several machines.

Proceeding now to a more detailed description reference will be had tothe accompanying drawings, in which- Fig. 1 is a side elevation of awarp beaming machine equipped with the automatic controls forming thesubject matter of this invention.

Fig. 2 is an enlarged side elevation of a portion of the assemblyappearing in Fig. 1.

Fig. 3 is a plan view of the warp showing one of the conventional leasesemployed to assist in maintaining the warp ends in their correctrelationship. This view also shows a feeler element extending upwardlybetween adjacent warp ends so as to be engaged and operated by thelease.

Fig. 4 is a detail View.

Fig. 5 is a wiring diagram.

Fig. 6 is a large detail of a feeler switch.

As shown in these drawings, the warp 5 is passed around tensioning rolls6 and then over guide rolls 1, 8 and 9 to the beam H]. The beam isrotated by contact with driving drum l l which, in turn, is driven frommotor l2 through the agency of a conventional drive connectioncomprising pulley !3, belt l4, pulley I5, reduction gearing i 6 andfriction clutch l 7. The starting and stopping of driving drum II isefiected through the agency of the clutch operating lever l8 whichcarries part of clutch I! and is intermediately pivoted to swing aboutthe pivotal axis l9. One end of lever I8 carries the starting treadle2B. The other end of lever I8 is pivoted at 2| to the lower end of avertically extending clutch releasing rod 22. When rod 22 is latched inthe elevated position shown in Figs. 1 and 2, clutch ii is engaged tocomplete the drive connection between motor I2 and beam driving drum H.

60 When the latch mechanism holding rod 22 in its elevated position isreleased, said rod drops to a lower positionand permits lever Hi torelease clutch l1 thereby stopping drum II and beam H].

In the present instance rod 22 is shown latched in its elevated positionby a latch mechanism comprising a rocker 24 intermediately pivoted to abracket 25 mounted on the machine frame 26. One end 240, of rocker 24 isengaged in a notch 2'! provided in rod 22. The other end 241) of therocker is connected to frame 26 by a spring 28. When the machine is inoperation rocker 24 is held in a horizontal position by reason of thefact that the end 2412 is engaged beneath a projection 29 carried by thearm 30 of a bell crank lever 3|. This lever 3| is pivoted to the machineframe at 32 and has its other arm 33 pivoted to the armature 34 of asolenoid 35. A spring 36, connected between rod 22 and the machine frame26, serves to pull said rod inwardly toward the engaging end of rocker24. When solenoid 35 is energized armature 34 is pulled down and swingslever 3| in a clockwise direction so that projection 29 of said lever isswung clear of the adjacent end of the rocker. This frees the rocker forswinging movement in acounterclockwise direction about its pivot andpermits rod 22 to drop to its clutch releasing position. I

According to one feature of the present invention solenoid 35 isenergized to permit rod 22 to drop to its clutch releasing positionwhenever one of the leases A (Fig. 3) carried by. warp 5 reaches apredetermined point in the travel of thewarpfrom the guide roll 8 to thewarp rattle 38. This is accomplished by the provision of an automaticfeeler switch generally indicated at 39 in Figs. 1 and 5. The movablecontact 39a of this switch is formed by the lower end of a feeler 40which is intermediately pivoted at 4| to a suitable support 42. Theupper portion of feeler 40 extends upwardly between adjacent endsof thewarp as shown in Fig. 3 so that it lies in the path of travel of theleases. Each time a lease is moved against the upper portion of thefeeler the latter swings about the pivot 41 so that the lower contactend 39a engages the cooperating stationary switch contact 43 from whichit is normally spaced by means of spring 44. The closing of switch 39energizes solenoid 35 so that armature 34 is pulled down to release thelatch holding the clutchreleasing rod 22 in its elevated or clutchengaging position.

As shown in the wiring diagram (Fig. 5) the normally open switch 39 isconnected to the line wires 45 and 46 in series with solenoid 35.

When rod 22 drops to its clutch releasing position it serves to open anormally closed switch 41 which is connected across the line wires 45and 4B in series with the motor 48 of a fan 49.

The opening of switch 41 is accomplished through the agency of a switchoperating lever having one end pivoted to a bracket 15 and the other endconnected, by supporting spring 50, to the upper end of rod 22. Whenlever 15 is pulled downwardly by rod 22 the lever projection 15a actsagainst the switch member 41a. to open switch 41 against the resistanceof a suitable switch closing spring (not shown) contained in the switchcasing.

From the foregoing it will be apparent that whenever a lease carried bythe warp presses against the feeler the beam l0 and fan 43 are broughtto rest. The operator, after removing the lease in the usual manner,depresses the pedal 23 to swing the clutch lever I8 back to its clutchengaging position. During this movement of lever la red 22 movesupwardly and is again secured in its elevated position by re-engagementof the end 24a of rocker 24 in notch 21. During this resetting of rod 22sprin is raised to return the switch opening lever 15 to its originalposition and thus permits reclosing of switch 41.

The beam rattle 38 is suspended from a bracket 5| by means of the chain52 and bell crank lever 53. The beam rattle and its supporting bellcrank lever 53 normally occupy the position shown in full lines inFig. 1. In this position of the parts it will be noted that arm 54 ofthe bell crank lies below a normally open switch 55 mounted on bracket5|. If there are any snarls in the warp as it approaches the beam rattle38 these snarls will engage and force the beam rattle from the full tothe dotted line position shown in Figs. 1 and 2. This movement of thebeam rattle causes the supporting bell crank 53 to assume the inclinedposition shown by dotted lines in Fig. 1 with the result that theshorter arm 54 of the bell crank is moved against and closes switch 55.Since switch 55 is connected in series with solenoid 35 as shown in Fig.5 it follows that the closure of this switch will energize the solenoidto release the rod 22 and stop the machine whenever the beam rattle isdisplaced to its dotted line position. When the operator has remediedthe condition resulting in this stoppage of the machine the beam rattle38 and its supporting bell crank 53 will resume their normal positionsand permit reopening of switch 55.

It is also desirable to stop the machine when the warp is subjected toexcessive tension caused by knotting or catching of the warp strands atsome point in advance of the guide roll I. To this end the roll 1 isjournalled in a slidably mounted frame 58 equipped with guide pins 59working in guide openings 60 provided in the machine frame 26. The endsof the pins remote from frame 58 are connected by a cross bar 6| whichcarries the movable contact 62 of a normally open switch 63. Springs 59aencircle the guide pins 59 and bear against cross bar 6| to normallyhold the contact 62 separated from a cooperating stationary contact 64.When the tension on the warp exceeds a predetermined value, the roll 1and frame 58 are pulled to the right against the resistance of springs59:: so that switch 63 is closed by engagement of the movable contact 62with the stationary contact 64. Since switch 63 is connected in serieswith solenoid 35 as shown in Fig. 5 it will be evident that the closureof this switch energizes the solenoid to permit the clutch releasing rod22 to drop to its clutch releasing position.

When it is desired to stop the machine independently of the automaticcontrols this is accomplished through the agency of a hand lever 61.This lever is intermediately pivoted at 68 and is provided at its lowerend with an adjustable abutment 69. When the upper end of lever 61 isswung to the right from the position shown in Figs. 1 and 2 the abutmentE9 enages and forces rod 22 to the left so that said rod is moved clearof the rocker 24 and drops to its clutch releasing position.

A roller 10 secured to lever 61 below the pivot 68 is normally disposedin contact with a stationary roller H journalled in the machine frame26. These rollers form part of a conventional hair pin stop motion thefunction of which is to release the rod 22 through the agency of lever61 whenever one of the conventional warp riding pins 13 is permitted todrop between the rollers T0 and H by breakage of one of the warp ends.Since this type of hair pin stop motion is well known furtherdescription thereof is not considered necessary to an understanding ofthe present invention.

While I have described what I now consider to be the preferredembodiment of this invention it will be understood that variousmodifications may be resorted to within the scope and spirit of theinvention as defined by the appended claims.

I claim:

1. The combination with a warp beaming machine and its driving motor ofa normally open switch arranged to be engaged by a lease carried by thewarp when said lease reaches a predetermined point in its travel towardthe beam rattle and means functioning in response toclosure of saidswitch to disrupt the drive connection between said machine and saidmotor.

2. The combination with a warp beaming machine and its driving motor ofa normally open feeler switch arranged to be engaged and closed by oneof the leases carried by the warp when said lease reaches apredetermined point in its travel toward the beam rattle, a solenoidconnected in series with said switch so as to be energized by theclosure of said switch, and means functioning, in response toenergization of said solenoid, to disrupt the drive connection betweensaid machine and said motor.

3. In combination, a warp beaming machine, a motor for driving saidmachine, a drive connection between said machine and motor including aclutch and a clutch releasing rod, the latter normally tending to aclutch releasing position, a releasable latch device normally arrangedto latch said clutch releasing rod in clutch engaging position, a latchcontrol solenoid adapted, when energized, to release said latch deviceto permit said rod to move to its clutch releasing position, a normallyopen switch adapted to be closed to energize said solenoid whenever alease carried by the Warp reaches a predetermined point in its traveltoward the beam rattle of the warping machine, the movable contact ofsaid switch extending upwardly between the warp ends in position to beengaged by said lease.

WILLIAM V. BOYD.

